diff --git a/.vscode/c_cpp_properties.json b/.vscode/c_cpp_properties.json
new file mode 100644
index 0000000..cd3d381
--- /dev/null
+++ b/.vscode/c_cpp_properties.json
@@ -0,0 +1,17 @@
+{
+    "configurations": [
+        {
+            "name": "Linux",
+            "includePath": [
+                "${workspaceFolder}/**"
+            ],
+            "defines": [],
+            "compilerPath": "/usr/bin/gcc",
+            "cStandard": "c17",
+            "cppStandard": "gnu++17",
+            "intelliSenseMode": "linux-gcc-x64",
+            "configurationProvider": "ms-vscode.makefile-tools"
+        }
+    ],
+    "version": 4
+}
\ No newline at end of file
diff --git a/cap.c b/cap.c
index 1e09431..0dcceee 100644
--- a/cap.c
+++ b/cap.c
@@ -227,6 +227,7 @@ void cleanup_(int signum)
 
     // 在程序结束时，清理缓存链表
     free_ip_cache();
+
     if (ip2region_area != NULL) {
         free(ip2region_area);
         ip2region_area = NULL;
@@ -257,22 +258,18 @@ int main(int argc, char **argv)
     // 注册 SIGTERM 信号处理函数
     signal(SIGTERM, cleanup_);
 
-
     int         opt;
     char        errbuf[PCAP_ERRBUF_SIZE]; // 错误缓冲区
-
-    
     char        protocol[] = "tcp";
-    
     char        interface[256] = "{ 0 }";
-    strcpy(interface, "eth0");
+    char Ipset_Command[BUFFER];
 
+    strcpy(interface, "eth0");
     memset(&alldevs, 0, sizeof(alldevs));
     memset(&device, 0, sizeof(device));
     memset(errbuf, 0, PCAP_ERRBUF_SIZE);
 
-    char Ipset_Command[BUFFER];
-    
+
     while ((opt = getopt(argc, argv, "di:s:h?")) != -1) {
         switch (opt) {
         case 'd':
@@ -329,6 +326,7 @@ int main(int argc, char **argv)
         perror("shmget");
         exit(1);
     }
+
     // 连接共享内存到进程地址空间
     RULE_NAME = (char *)shmat(shmid, NULL, 0);
     if (RULE_NAME == (char *)-1) {
@@ -336,6 +334,7 @@ int main(int argc, char **argv)
         exit(1);
     }
 
+
     pid = fork();               // 创建子进程
     if (pid == 0)               // 子进程
     {
@@ -418,7 +417,6 @@ int main(int argc, char **argv)
         return 1;
     }
 
-
     // 开始捕获数据包
     if (pcap_loop(handle, 0, packet_handler, NULL) < 0) {
         fprintf(stderr, "捕获数据包时出错: %s\n", pcap_geterr(handle));
diff --git a/common.c b/common.c
index 043a308..a4acd09 100644
--- a/common.c
+++ b/common.c
@@ -141,15 +141,17 @@ char *_time() {
     return temp; // 返回静态缓冲区地址
 }
 
+// 将字符串转换为IPv4地址
 int is_valid_ip(const char *ip)
 {
     struct sockaddr_in sa;
-    // 尝试将字符串转换为IPv4地址
+    // 将字符串转换为IPv4地址
     int result = inet_pton(AF_INET, ip, &(sa.sin_addr));
 
     return result != 0;
 }
 
+// 修改进程优先级
 int _nice(int increment) {
     // 获取当前优先级
     int oldprio = getpriority(PRIO_PROCESS, getpid());